Chemical models of protein β-sheets that dimerize in water through interchain β-sheet interactions

ORGN 731

James S. Nowick, jsnowick@uci.edu and Omid Khakshoor, khakshoo@uci.edu. Department of Chemistry, University of California, Irvine, 4126 Natural Sciences 1, Irvine, CA 92697-2025
To better understand and control β-sheet interactions between disease-related proteins, our research group is developing chemical models of protein β-sheets. This poster describes the development of 54-membered-ring cyclic peptides that fold and dimerize in water through interchain β-sheet interactions. These cyclic peptides, which contain two unnatural amino acids Hao on one edge and a heptapeptide β-strand on the other edge, form β-sheet dimers that further associate to form higher oligomers, possibly tetramers.